If you shot a gun from one airplane at another traveling the same speed and altitude, would the bullet fall away or hit the other plane?
There are a few points to make before one can give a completely correct answer to this question. For example, the distance between the two planes, (air mass, pressure, temperature, .etc) what type of weapon is being used (projectile velocity), just to name a few. In a very basic way, one could say "yes". Just ask many of the surviving WWII pilots who flew in battle and were in dogfights. If both aircraft were at the same altitude and speed, the weapon being used is already at the given velocity as the plane. By firing the weapon, the velocity of the projectile is determined by the force used to send it on its way, and the mass of that projectile. Once the projectile moves into the atmosphere, it will begin to slow due to friction by moving through the air. However, in most cases if a large caliber weapon is used, the force is much greater thus a higher velocity to its target, the other plane. If both planes are close enough so that the projectile will maintain enough of its trajectory before friction and other forces change or slow it, then yes, that projectile will strike its target. When there is a fixed point where the projectile begins its journey, and that point has a lower velocity than its target or path of travel, then "leading" the target is a common term used.
Would there be severe effects of having the human body travel the speed of light?
Have you ever heard them mention "red-shift" when people are talking about astronomy? Probably have, but to quickly summarize, most stars are actually traveling away from us. We know from nuclear physics what wavelength, or color, of photons each star is releasing by the type of nuclear reaction taking place (this is called the Main sequence). Since we know what color it should be, and we can measure how much the light has shifted to red, we know some things about it's distance or velocity as it moves away from us.Now. If you are traveling TOWARDS a source of light, the wavelength of that light would shift towards the blue end of the light spectrum.If you are traveling towards a source of light at some large percentage of the speed of light... the light from a distant star would be blue shifted all the way into powerful x-ray area of the UV Spectrum.So lets say that you were flying towards Sirius, the Dog star... the brightest star in the sky. Technically, it's two stars, but we are too far away so we only see one. The 2nd one is a white dwarf anyway.It's about 8.6 light years away or so, so if you wanna go there, you better go FAST. It's actually one of the few stars moving towards us, and that's part of why it's one of the bluest stars in the sky as well.About the time that you are approaching the speed of light... that blue white light from Sirius will change. It'll be hitting you hard enough due to your extra velocity that the photons would likely shoot right through you, leaving a small hole of burned and damaged tissue. With your added velocity, that blue white light would be brightest source of microwave and x ray radiation in your nighttime sky. Without massive shielding, and I don't mean just an apron like the x-ray technician at the hospital wears ... you'd probably arrive at Sirius either toasted, or melted. At a minimum, you would arrive with massive cellular damage.
Simple Physics Question PLEASE HELP?
initial vertical velocity Vv = vsinΘ = 5m/s * sin30 = 2.5 m/s Use Torricelli's equation to find final velocity: v² = u² + 2as = (2.5m/s)² + 2 * 9.8m/s² * 2m = 45.45 m²/s² v = 6.7 m/s (down) horizontal velocity Vh = vcosΘ = 5m/s * cos30º = 4.3 m/s V = √(Vv² + Vh²) = √(6.7² + 4.3²) = 8 m/s Θ = arctan(6.7/4.3) = 57º w/r/t horizontal
Why do all objects hit with the same velocity (ignoring air resistance) if dropped from the same height?
Acceleration due to gravity affects heavier objects less, and lighter objects more, therefore it balances out the effect of weight. The mass of an object is in a state of change as it falls since it becomes closer to the center of the earth and therefore is affected by the acceleration due to gravity the same. Acceleration due to gravity affects all bodies the same since it depends primarily on the gravity of the planet, not on the object being dropped. none of the above
How fast would a feather need to travel to kill you?
Unaltered feather? This is difficult because assuming you are in an environment with air, the friction due to airspeed would like disintegrate the feather projectile almost instantly.But how long would a free-falling feather in space need to fall to accumulate enough energy to be lethal? Some quick research shows that ~500 Joules of impact energy is considered lethal.Google says a feather weighs 0.0082 grams. Travelling at 340m/s in a vaccuum a feather will have enough energy to be lethal. With earth’s gravity that would take 34 seconds of free fall.Edit: Mistaking grams for kg, and the answer actually comes to almost 4 times the speed of sound. The feather would not also break apart but perhaps even disintegrate.So, cram 1000 feathers into a small pellet and fire it at 340 m/s and it’s death by feathers. Otherwise, no way.
How does a plane overcome the forces of gravity and air resistance to take off?
The shape of the wing causes LIFT from the air rushing past the 2 sides of the wing. 2 paths of air hit the wing at the same time, 1 goes under the flat surface of the bottom of the wing, the other goes over the curved part, taking more time to cover the longer distance causing the air streams to reach the trailing edge at different times, the air actually pushes the plane off the ground. A 747 weighs nearly 400,000 # , that's a lot of air.movement.
A bowling ball suspended from the ceiling by a massless cable swings freely back and forth. If the ball's?
a bowling ball suspended from the ceiling by a massless cable swings freely back and forth. If the ball's top speed is 5.0 m/s at 0.25 m from the floor, how high will the bowling ball be when its speed is zero? Ignore friction and air resistance.